Based on this product's specifications, here are some alternatives and similar models
Temperature sensor for domestic hot water TECH CTKTY (model CTKTY)
Summary description:
TECH CTKTY is a temperature sensor designed for domestic hot water (DHW) systems. The sensor provides temperature measurement for control and monitoring of hot water circuits and storage tanks. It is compatible with heating and boiler controllers that accept KTY-type sensors, enabling temperature-based regulation, safety monitoring and system diagnostics in residential and light commercial installations.